<template>
  <div class="wrapper">
    <img class="wrapper__img" src="http://www.dell-lee.com/imgs/vue3/user.png"/>
    <div class="wrapper__input">
      <input
        class="wrapper__input__content"
        placeholder="用户名"
        v-model="username"
      />
    </div>
    <div class="wrapper__input">
      <input
        type="password"
        class="wrapper__input__content"
        placeholder="请输入密码"
        v-model="password"
      />
    </div>
    <div class="wrapper__login-button" @click="handleLogin">登陆</div>
    <div class="wrapper__login-link" @click="handleRegisterClick">立即注册</div>
    <Toast v-if="show" :message="toastMessage" />
  </div>
</template>

<script>
import { reactive, toRefs } from 'vue'
import { useRouter } from 'vue-router';
import { post } from '../../utils/request'
import Toast,{ useToastEffect } from '../../components/Toast.vue'


// 处理注册逻辑
const useLoginEffect = (showToast) => {
  const router = useRouter()
  const data = reactive({ username: '',password: '' })
  const handleLogin = async () => {
        try {
          const { user,password } = data;
          if(user===''||password===''){
            showToast('账号密码不能为空')
            // handleLogin()
          }
          const result = await post('/api/user/login', {
            username: data.username,
            password: data.password
          })
          // result?.data?.errno === 0
          if (result?.errno === 0) {
            localStorage.isLogin = true
            router.push({ name: 'Home' })
          } else {
            showToast('登录失败')
          }
        } catch (e) {
          showToast('请求失败')
        }
      }
      const { username, password } = toRefs(data)
      return{ username, password, handleLogin}
}

// 处理注册跳转
const useRegisterEffect = ()=>{
  const router = useRouter()
  const handleRegisterClick = () => {
    router.push({ name: 'Register' })
  }
  return { handleRegisterClick }
}

export default {
  name: 'Login',
  components:{ Toast } ,
  // 职责就是告诉你代码执行的流程
  setup() {
    const { show, toastMessage, showToast } = useToastEffect();  
    const { username,password, handleLogin } = useLoginEffect(showToast);
    const { handleRegisterClick } = useRegisterEffect()
    return { 
      username, password, show, toastMessage,
      handleLogin, handleRegisterClick,
    }
  }
}
</script>

<style lang="scss" scoped>
@import '../../style/viriables.scss';
.wrapper {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  &__img {
    display: block;
    margin: 0 auto .4rem auto;
    width: .66rem;
    height: .66rem;
  }
  &__input {
    height: .48rem;
    margin: 0 .4rem .16rem .4rem;
    padding: 0 .16rem;
    background: #F9F9F9;
    border: 1px solid rgba(0,0,0,0.10);
    border-radius: 6px;
    border-radius: 6px;
    &__content {
      margin-top: .12rem;
      line-height: .22rem;
      border: none;
      outline: none;
      width: 100%;
      background: none;
      font-size: .16rem;
      color: $content-notice-fontcolor;
      &::placeholder {
        color: $content-notice-fontcolor;
      }
    }
  }
  &__login-button {
    margin: .32rem .4rem .16rem .4rem;
    line-height: .48rem;
    background: $btn-bgColor;
    box-shadow: 0 .04rem .08rem 0 rgba(0,145,255,0.32);
    border-radius: .04rem;
    border-radius: .04rem;
    color: $bgColor;
    font-size: .16rem;
    text-align: center;
  }
  &__login-link {
    text-align: center;
    font-size: .14rem;
    color: $content-notice-fontcolor;
  }
}
</style>